feat(server): fully accelerated nvenc (#9452)

* use arrayContaining

* libplacebo for nvenc

update dockerfile

* tweaks

* update nvenc options

* tweak settings

* refactor

* toggle for hardware decoding, software / hardware decoding for nvenc and rkmpp

* fix software tone-mapping not being applied

* separate configs for hw/sw

* update api

* add hw decode toggle

* fix mutating config

* remove `version` flag

* fix config type

* remove submodule

* handle temporal AQ

* remove duplicate tests

* use `tonemap_opencl`

* wording

* update docs

docker/hwaccel.ml.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 # Configurations for hardware-accelerated machine learning
 
 # If using Unraid or another platform that doesn't allow multiple Compose files,
@@ -30,7 +28,7 @@ services:
 
   openvino:
     device_cgroup_rules:
-      - "c 189:* rmw"
+      - 'c 189:* rmw'
     devices:
       - /dev/dri:/dev/dri
     volumes:

docker/hwaccel.transcoding.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 # Configurations for hardware-accelerated transcoding
 
 # If using Unraid or another platform that doesn't allow multiple Compose files,

docs/docs/features/hardware-transcoding.md

@@ -22,7 +22,8 @@ You do not need to redo any transcoding jobs after enabling hardware acceleratio
 - WSL2 does not support Quick Sync.
 - Raspberry Pi is currently not supported.
 - Two-pass mode is only supported for NVENC. Other APIs will ignore this setting.
-- Only encoding is currently hardware accelerated, so the CPU is still used for software decoding and tone-mapping.
+- By default, only encoding is currently hardware accelerated. This means the CPU is still used for software decoding and tone-mapping.
+  - NVENC and RKMPP can be fully accelerated by enabling hardware decoding in the video transcoding settings.
 - Hardware dependent
   - Codec support varies, but H.264 and HEVC are usually supported.
     - Notably, NVIDIA and AMD GPUs do not support VP9 encoding.
@@ -65,6 +66,7 @@ For RKMPP to work:
 
 3. Redeploy the `immich-microservices` container with these updated settings.
 4. In the Admin page under `Video transcoding settings`, change the hardware acceleration setting to the appropriate option and save.
+5. (Optional) If using a compatible backend, you may enable hardware decoding for optimal performance.
 
 #### Single Compose File
 

open-api/immich-openapi-specs.json

@@ -10050,6 +10050,9 @@
           "accel": {
             "$ref": "#/components/schemas/TranscodeHWAccel"
           },
+          "accelDecode": {
+            "type": "boolean"
+          },
           "acceptedAudioCodecs": {
             "items": {
               "$ref": "#/components/schemas/AudioCodec"
@@ -10125,6 +10128,7 @@
         },
         "required": [
           "accel",
+          "accelDecode",
           "acceptedAudioCodecs",
           "acceptedVideoCodecs",
           "bframes",

open-api/typescript-sdk/src/fetch-client.ts

@@ -863,6 +863,7 @@ export type AssetFullSyncDto = {
 };
 export type SystemConfigFFmpegDto = {
     accel: TranscodeHWAccel;
+    accelDecode: boolean;
     acceptedAudioCodecs: AudioCodec[];
     acceptedVideoCodecs: VideoCodec[];
     bframes: number;

server/src/config.ts

@@ -97,6 +97,7 @@ export interface SystemConfig {
     preferredHwDevice: string;
     transcode: TranscodePolicy;
     accel: TranscodeHWAccel;
+    accelDecode: boolean;
     tonemap: ToneMapping;
   };
   job: Record<ConcurrentQueueName, { concurrency: number }>;
@@ -228,6 +229,7 @@ export const defaults = Object.freeze<SystemConfig>({
     transcode: TranscodePolicy.REQUIRED,
     tonemap: ToneMapping.HABLE,
     accel: TranscodeHWAccel.DISABLED,
+    accelDecode: false,
   },
   job: {
     [QueueName.BACKGROUND_TASK]: { concurrency: 5 },

server/src/dtos/system-config.dto.ts

@@ -132,6 +132,9 @@ export class SystemConfigFFmpegDto {
   @ApiProperty({ enumName: 'TranscodeHWAccel', enum: TranscodeHWAccel })
   accel!: TranscodeHWAccel;
 
+  @ValidateBoolean()
+  accelDecode!: boolean;
+
   @IsEnum(ToneMapping)
   @ApiProperty({ enumName: 'ToneMapping', enum: ToneMapping })
   tonemap!: ToneMapping;

server/src/services/media.service.spec.ts

@@ -1335,6 +1335,51 @@ describe(MediaService.name, () => {
       );
     });
 
+    it('should use hardware decoding for nvenc if enabled', async () => {
+      mediaMock.probe.mockResolvedValue(probeStub.matroskaContainer);
+      systemMock.get.mockResolvedValue({
+        ffmpeg: { accel: TranscodeHWAccel.NVENC, accelDecode: true },
+      });
+      assetMock.getByIds.mockResolvedValue([assetStub.video]);
+      await sut.handleVideoConversion({ id: assetStub.video.id });
+      expect(mediaMock.transcode).toHaveBeenCalledWith(
+        '/original/path.ext',
+        'upload/encoded-video/user-id/as/se/asset-id.mp4',
+        {
+          inputOptions: expect.arrayContaining([
+            '-hwaccel cuda',
+            '-hwaccel_output_format cuda',
+            '-noautorotate',
+            '-threads 1',
+          ]),
+          outputOptions: expect.arrayContaining([expect.stringContaining('scale_cuda=-2:720:format=nv12')]),
+          twoPass: false,
+        },
+      );
+    });
+
+    it('should use hardware tone-mapping for nvenc if hardware decoding is enabled and should tone map', async () => {
+      mediaMock.probe.mockResolvedValue(probeStub.videoStreamHDR);
+      systemMock.get.mockResolvedValue({
+        ffmpeg: { accel: TranscodeHWAccel.NVENC, accelDecode: true },
+      });
+      assetMock.getByIds.mockResolvedValue([assetStub.video]);
+      await sut.handleVideoConversion({ id: assetStub.video.id });
+      expect(mediaMock.transcode).toHaveBeenCalledWith(
+        '/original/path.ext',
+        'upload/encoded-video/user-id/as/se/asset-id.mp4',
+        {
+          inputOptions: expect.arrayContaining(['-hwaccel cuda', '-hwaccel_output_format cuda']),
+          outputOptions: expect.arrayContaining([
+            expect.stringContaining(
+              'tonemap_cuda=desat=0:matrix=bt709:primaries=bt709:range=pc:tonemap=hable:transfer=bt709:format=nv12',
+            ),
+          ]),
+          twoPass: false,
+        },
+      );
+    });
+
     it('should set options for qsv', async () => {
       storageMock.readdir.mockResolvedValue(['renderD128']);
       mediaMock.probe.mockResolvedValue(probeStub.matroskaContainer);
@@ -1633,8 +1678,9 @@ describe(MediaService.name, () => {
 
     it('should set options for rkmpp', async () => {
       storageMock.readdir.mockResolvedValue(['renderD128']);
+      storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => true, isCharacterDevice: () => true });
       mediaMock.probe.mockResolvedValue(probeStub.matroskaContainer);
-      systemMock.get.mockResolvedValue({ ffmpeg: { accel: TranscodeHWAccel.RKMPP } });
+      systemMock.get.mockResolvedValue({ ffmpeg: { accel: TranscodeHWAccel.RKMPP, accelDecode: true } });
       assetMock.getByIds.mockResolvedValue([assetStub.video]);
       await sut.handleVideoConversion({ id: assetStub.video.id });
       expect(mediaMock.transcode).toHaveBeenCalledWith(
@@ -1663,10 +1709,12 @@ describe(MediaService.name, () => {
 
     it('should set vbr options for rkmpp when max bitrate is enabled', async () => {
       storageMock.readdir.mockResolvedValue(['renderD128']);
+      storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => true, isCharacterDevice: () => true });
       mediaMock.probe.mockResolvedValue(probeStub.videoStreamVp9);
       systemMock.get.mockResolvedValue({
         ffmpeg: {
           accel: TranscodeHWAccel.RKMPP,
+          accelDecode: true,
           maxBitrate: '10000k',
           targetVideoCodec: VideoCodec.HEVC,
         },
@@ -1686,9 +1734,10 @@ describe(MediaService.name, () => {
 
     it('should set cqp options for rkmpp when max bitrate is disabled', async () => {
       storageMock.readdir.mockResolvedValue(['renderD128']);
+      storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => true, isCharacterDevice: () => true });
       mediaMock.probe.mockResolvedValue(probeStub.matroskaContainer);
       systemMock.get.mockResolvedValue({
-        ffmpeg: { accel: TranscodeHWAccel.RKMPP, crf: 30, maxBitrate: '0' },
+        ffmpeg: { accel: TranscodeHWAccel.RKMPP, accelDecode: true, crf: 30, maxBitrate: '0' },
       });
       assetMock.getByIds.mockResolvedValue([assetStub.video]);
       await sut.handleVideoConversion({ id: assetStub.video.id });
@@ -1707,7 +1756,9 @@ describe(MediaService.name, () => {
       storageMock.readdir.mockResolvedValue(['renderD128']);
       storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => true, isCharacterDevice: () => true });
       mediaMock.probe.mockResolvedValue(probeStub.videoStreamHDR);
-      systemMock.get.mockResolvedValue({ ffmpeg: { accel: TranscodeHWAccel.RKMPP, crf: 30, maxBitrate: '0' } });
+      systemMock.get.mockResolvedValue({
+        ffmpeg: { accel: TranscodeHWAccel.RKMPP, accelDecode: true, crf: 30, maxBitrate: '0' },
+      });
       assetMock.getByIds.mockResolvedValue([assetStub.video]);
       await sut.handleVideoConversion({ id: assetStub.video.id });
       expect(mediaMock.transcode).toHaveBeenCalledWith(
@@ -1724,6 +1775,54 @@ describe(MediaService.name, () => {
         },
       );
     });
+
+    it('should use software decoding and tone-mapping if hardware decoding is disabled', async () => {
+      storageMock.readdir.mockResolvedValue(['renderD128']);
+      storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => true, isCharacterDevice: () => true });
+      mediaMock.probe.mockResolvedValue(probeStub.videoStreamHDR);
+      systemMock.get.mockResolvedValue({
+        ffmpeg: { accel: TranscodeHWAccel.RKMPP, accelDecode: false, crf: 30, maxBitrate: '0' },
+      });
+      assetMock.getByIds.mockResolvedValue([assetStub.video]);
+      await sut.handleVideoConversion({ id: assetStub.video.id });
+      expect(mediaMock.transcode).toHaveBeenCalledWith(
+        '/original/path.ext',
+        'upload/encoded-video/user-id/as/se/asset-id.mp4',
+        {
+          inputOptions: [],
+          outputOptions: expect.arrayContaining([
+            expect.stringContaining(
+              'zscale=t=linear:npl=100,tonemap=hable:desat=0,zscale=p=bt709:t=bt709:m=bt709:range=pc,format=yuv420p',
+            ),
+          ]),
+          twoPass: false,
+        },
+      );
+    });
+
+    it('should use software decoding and tone-mapping if opencl is not available', async () => {
+      storageMock.readdir.mockResolvedValue(['renderD128']);
+      storageMock.stat.mockResolvedValue({ ...new Stats(), isFile: () => false, isCharacterDevice: () => false });
+      mediaMock.probe.mockResolvedValue(probeStub.videoStreamHDR);
+      systemMock.get.mockResolvedValue({
+        ffmpeg: { accel: TranscodeHWAccel.RKMPP, accelDecode: true, crf: 30, maxBitrate: '0' },
+      });
+      assetMock.getByIds.mockResolvedValue([assetStub.video]);
+      await sut.handleVideoConversion({ id: assetStub.video.id });
+      expect(mediaMock.transcode).toHaveBeenCalledWith(
+        '/original/path.ext',
+        'upload/encoded-video/user-id/as/se/asset-id.mp4',
+        {
+          inputOptions: [],
+          outputOptions: expect.arrayContaining([
+            expect.stringContaining(
+              'zscale=t=linear:npl=100,tonemap=hable:desat=0,zscale=p=bt709:t=bt709:m=bt709:range=pc,format=yuv420p',
+            ),
+          ]),
+          twoPass: false,
+        },
+      );
+    });
   });
 
   it('should tonemap when policy is required and video is hdr', async () => {

server/src/services/media.service.ts

@@ -36,9 +36,11 @@ import {
   AV1Config,
   H264Config,
   HEVCConfig,
-  NVENCConfig,
+  NvencHwDecodeConfig,
+  NvencSwDecodeConfig,
   QSVConfig,
-  RKMPPConfig,
+  RkmppHwDecodeConfig,
+  RkmppSwDecodeConfig,
   ThumbnailConfig,
   VAAPIConfig,
   VP9Config,
@@ -360,8 +362,7 @@ export class MediaService {
           `Error occurred during transcoding. Retrying with ${config.accel.toUpperCase()} acceleration disabled.`,
         );
       }
-      config.accel = TranscodeHWAccel.DISABLED;
-      transcodeOptions = await this.getCodecConfig(config).then((c) =>
+      transcodeOptions = await this.getCodecConfig({ ...config, accel: TranscodeHWAccel.DISABLED }).then((c) =>
         c.getOptions(target, mainVideoStream, mainAudioStream),
       );
       await this.mediaRepository.transcode(input, output, transcodeOptions);
@@ -494,7 +495,7 @@ export class MediaService {
     let handler: VideoCodecHWConfig;
     switch (config.accel) {
       case TranscodeHWAccel.NVENC: {
-        handler = new NVENCConfig(config);
+        handler = config.accelDecode ? new NvencHwDecodeConfig(config) : new NvencSwDecodeConfig(config);
         break;
       }
       case TranscodeHWAccel.QSV: {
@@ -506,7 +507,10 @@ export class MediaService {
         break;
       }
       case TranscodeHWAccel.RKMPP: {
-        handler = new RKMPPConfig(config, await this.getDevices(), await this.hasOpenCL());
+        handler =
+          config.accelDecode && (await this.hasOpenCL())
+            ? new RkmppHwDecodeConfig(config, await this.getDevices())
+            : new RkmppSwDecodeConfig(config, await this.getDevices());
         break;
       }
       default: {

server/src/services/system-config.service.spec.ts

@@ -66,6 +66,7 @@ const updatedConfig = Object.freeze<SystemConfig>({
     preferredHwDevice: 'auto',
     transcode: TranscodePolicy.REQUIRED,
     accel: TranscodeHWAccel.DISABLED,
+    accelDecode: false,
     tonemap: ToneMapping.HABLE,
   },
   logging: {

server/src/utils/media.ts

@@ -26,14 +26,18 @@ class BaseConfig implements VideoCodecSWConfig {
       }
     }
 
-    options.outputOptions.push(...this.getPresetOptions(), ...this.getThreadOptions(), ...this.getBitrateOptions());
+    options.outputOptions.push(
+      ...this.getPresetOptions(),
+      ...this.getOutputThreadOptions(),
+      ...this.getBitrateOptions(),
+    );
 
     return options;
   }
 
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
   getBaseInputOptions(videoStream: VideoStreamInfo): string[] {
-    return [];
+    return this.getInputThreadOptions();
   }
 
   getBaseOutputOptions(target: TranscodeTarget, videoStream: VideoStreamInfo, audioStream?: AudioStreamInfo) {
@@ -80,11 +84,7 @@ class BaseConfig implements VideoCodecSWConfig {
       options.push(`scale=${this.getScaling(videoStream)}`);
     }
 
-    if (this.shouldToneMap(videoStream)) {
-      options.push(...this.getToneMapping());
-    }
-    options.push('format=yuv420p');
-
+    options.push(...this.getToneMapping(videoStream), 'format=yuv420p');
     return options;
   }
 
@@ -112,7 +112,11 @@ class BaseConfig implements VideoCodecSWConfig {
     }
   }
 
-  getThreadOptions(): Array<string> {
+  getInputThreadOptions(): Array<string> {
+    return [];
+  }
+
+  getOutputThreadOptions(): Array<string> {
     if (this.config.threads <= 0) {
       return [];
     }
@@ -218,7 +222,11 @@ class BaseConfig implements VideoCodecSWConfig {
     }
   }
 
-  getToneMapping() {
+  getToneMapping(videoStream: VideoStreamInfo) {
+    if (!this.shouldToneMap(videoStream)) {
+      return [];
+    }
+
     const colors = this.getColors();
 
     return [
@@ -348,8 +356,8 @@ export class ThumbnailConfig extends BaseConfig {
 }
 
 export class H264Config extends BaseConfig {
-  getThreadOptions() {
-    const options = super.getThreadOptions();
+  getOutputThreadOptions() {
+    const options = super.getOutputThreadOptions();
     if (this.config.threads === 1) {
       options.push('-x264-params frame-threads=1:pools=none');
     }
@@ -359,8 +367,8 @@ export class H264Config extends BaseConfig {
 }
 
 export class HEVCConfig extends BaseConfig {
-  getThreadOptions() {
-    const options = super.getThreadOptions();
+  getOutputThreadOptions() {
+    const options = super.getOutputThreadOptions();
     if (this.config.threads === 1) {
       options.push('-x265-params frame-threads=1:pools=none');
     }
@@ -391,8 +399,8 @@ export class VP9Config extends BaseConfig {
     return [`-${this.useCQP() ? 'q:v' : 'crf'} ${this.config.crf}`, `-b:v ${bitrates.max}${bitrates.unit}`];
   }
 
-  getThreadOptions() {
-    return ['-row-mt 1', ...super.getThreadOptions()];
+  getOutputThreadOptions() {
+    return ['-row-mt 1', ...super.getOutputThreadOptions()];
   }
 
   eligibleForTwoPass() {
@@ -425,7 +433,7 @@ export class AV1Config extends BaseConfig {
     return options;
   }
 
-  getThreadOptions() {
+  getOutputThreadOptions() {
     return []; // Already set above with svtav1-params
   }
 
@@ -434,7 +442,7 @@ export class AV1Config extends BaseConfig {
   }
 }
 
-export class NVENCConfig extends BaseHWConfig {
+export class NvencSwDecodeConfig extends BaseHWConfig {
   getSupportedCodecs() {
     return [VideoCodec.H264, VideoCodec.HEVC, VideoCodec.AV1];
   }
@@ -462,7 +470,7 @@ export class NVENCConfig extends BaseHWConfig {
   }
 
   getFilterOptions(videoStream: VideoStreamInfo) {
-    const options = this.shouldToneMap(videoStream) ? this.getToneMapping() : [];
+    const options = this.getToneMapping(videoStream);
     options.push('format=nv12', 'hwupload_cuda');
     if (this.shouldScale(videoStream)) {
       options.push(`scale_cuda=${this.getScaling(videoStream)}`);
@@ -513,6 +521,52 @@ export class NVENCConfig extends BaseHWConfig {
   }
 }
 
+export class NvencHwDecodeConfig extends NvencSwDecodeConfig {
+  getBaseInputOptions() {
+    return ['-hwaccel cuda', '-hwaccel_output_format cuda', '-noautorotate', ...this.getInputThreadOptions()];
+  }
+
+  getFilterOptions(videoStream: VideoStreamInfo) {
+    const options = [];
+    if (this.shouldScale(videoStream)) {
+      options.push(`scale_cuda=${this.getScaling(videoStream)}`);
+    }
+    options.push(...this.getToneMapping(videoStream));
+    if (options.length > 0) {
+      options[options.length - 1] += ':format=nv12';
+    } else {
+      options.push('format=nv12');
+    }
+    return options;
+  }
+
+  getToneMapping(videoStream: VideoStreamInfo) {
+    if (!this.shouldToneMap(videoStream)) {
+      return [];
+    }
+
+    const colors = this.getColors();
+    const tonemapOptions = [
+      'desat=0',
+      `matrix=${colors.matrix}`,
+      `primaries=${colors.primaries}`,
+      'range=pc',
+      `tonemap=${this.config.tonemap}`,
+      `transfer=${colors.transfer}`,
+    ];
+
+    return [`tonemap_cuda=${tonemapOptions.join(':')}`];
+  }
+
+  getInputThreadOptions() {
+    return [`-threads ${this.config.threads <= 0 ? 1 : this.config.threads}`];
+  }
+
+  getOutputThreadOptions() {
+    return [];
+  }
+}
+
 export class QSVConfig extends BaseHWConfig {
   getBaseInputOptions() {
     if (this.devices.length === 0) {
@@ -538,7 +592,7 @@ export class QSVConfig extends BaseHWConfig {
   }
 
   getFilterOptions(videoStream: VideoStreamInfo) {
-    const options = this.shouldToneMap(videoStream) ? this.getToneMapping() : [];
+    const options = this.getToneMapping(videoStream);
     options.push('format=nv12', 'hwupload=extra_hw_frames=64');
     if (this.shouldScale(videoStream)) {
       options.push(`scale_qsv=${this.getScaling(videoStream)}`);
@@ -604,7 +658,7 @@ export class VAAPIConfig extends BaseHWConfig {
   }
 
   getFilterOptions(videoStream: VideoStreamInfo) {
-    const options = this.shouldToneMap(videoStream) ? this.getToneMapping() : [];
+    const options = this.getToneMapping(videoStream);
     options.push('format=nv12', 'hwupload');
     if (this.shouldScale(videoStream)) {
       options.push(`scale_vaapi=${this.getScaling(videoStream)}`);
@@ -656,47 +710,22 @@ export class VAAPIConfig extends BaseHWConfig {
   }
 }
 
-export class RKMPPConfig extends BaseHWConfig {
-  private hasOpenCL: boolean;
-
+export class RkmppSwDecodeConfig extends BaseHWConfig {
   constructor(
     protected config: SystemConfigFFmpegDto,
     devices: string[] = [],
-    hasOpenCL: boolean = false,
   ) {
     super(config, devices);
-    this.hasOpenCL = hasOpenCL;
   }
 
   eligibleForTwoPass(): boolean {
     return false;
   }
 
-  getBaseInputOptions(videoStream: VideoStreamInfo) {
+  getBaseInputOptions(): string[] {
     if (this.devices.length === 0) {
       throw new Error('No RKMPP device found');
     }
-    return this.shouldToneMap(videoStream) && !this.hasOpenCL
-      ? [] // disable hardware decoding & filters
-      : ['-hwaccel rkmpp', '-hwaccel_output_format drm_prime', '-afbc rga'];
-  }
-
-  getFilterOptions(videoStream: VideoStreamInfo) {
-    if (this.shouldToneMap(videoStream)) {
-      if (!this.hasOpenCL) {
-        return super.getFilterOptions(videoStream);
-      }
-      const colors = this.getColors();
-      return [
-        `scale_rkrga=${this.getScaling(videoStream)}:format=p010:afbc=1`,
-        'hwmap=derive_device=opencl:mode=read',
-        `tonemap_opencl=format=nv12:r=pc:p=${colors.primaries}:t=${colors.transfer}:m=${colors.matrix}:tonemap=${this.config.tonemap}:desat=0`,
-        'hwmap=derive_device=rkmpp:mode=write:reverse=1',
-        'format=drm_prime',
-      ];
-    } else if (this.shouldScale(videoStream)) {
-      return [`scale_rkrga=${this.getScaling(videoStream)}:format=nv12:afbc=1`];
-    }
     return [];
   }
 
@@ -734,3 +763,29 @@ export class RKMPPConfig extends BaseHWConfig {
     return `${this.config.targetVideoCodec}_rkmpp`;
   }
 }
+
+export class RkmppHwDecodeConfig extends RkmppSwDecodeConfig {
+  getBaseInputOptions() {
+    if (this.devices.length === 0) {
+      throw new Error('No RKMPP device found');
+    }
+
+    return ['-hwaccel rkmpp', '-hwaccel_output_format drm_prime', '-afbc rga'];
+  }
+
+  getFilterOptions(videoStream: VideoStreamInfo) {
+    if (this.shouldToneMap(videoStream)) {
+      const colors = this.getColors();
+      return [
+        `scale_rkrga=${this.getScaling(videoStream)}:format=p010:afbc=1`,
+        'hwmap=derive_device=opencl:mode=read',
+        `tonemap_opencl=format=nv12:r=pc:p=${colors.primaries}:t=${colors.transfer}:m=${colors.matrix}:tonemap=${this.config.tonemap}:desat=0`,
+        'hwmap=derive_device=rkmpp:mode=write:reverse=1',
+        'format=drm_prime',
+      ];
+    } else if (this.shouldScale(videoStream)) {
+      return [`scale_rkrga=${this.getScaling(videoStream)}:format=nv12:afbc=1`];
+    }
+    return [];
+  }
+}

web/src/lib/components/admin-page/settings/ffmpeg/ffmpeg-settings.svelte

@@ -276,6 +276,15 @@
               isEdited={config.ffmpeg.accel !== savedConfig.ffmpeg.accel}
             />
 
+            <SettingSwitch
+              id="hardware-decoding"
+              title="HARDWARE DECODING"
+              {disabled}
+              subtitle="Applies only to NVENC and RKMPP. Enables end-to-end acceleration instead of only accelerating encoding. May not work on all videos."
+              bind:checked={config.ffmpeg.accelDecode}
+              isEdited={config.ffmpeg.accelDecode !== savedConfig.ffmpeg.accelDecode}
+            />
+
             <SettingSelect
               label="CONSTANT QUALITY MODE"
               desc="ICQ is better than CQP, but some hardware acceleration devices do not support this mode. Setting this option will prefer the specified mode when using quality-based encoding. Ignored by NVENC as it does not support ICQ."
@@ -297,6 +306,7 @@
               bind:checked={config.ffmpeg.temporalAQ}
               isEdited={config.ffmpeg.temporalAQ !== savedConfig.ffmpeg.temporalAQ}
             />
+
             <SettingInputField
               inputType={SettingInputFieldType.TEXT}
               label="PREFERRED HARDWARE DEVICE"